The murder trial commenced on Wednesday afternoon and is expected to last up to 67 days.

Shephard pleaded not guilty in court on Monday to first-degree murder and arson in the death of 18-year-old Baylee Wylie in December 2015.

She is the third person to stand trial in Wylie's death, 19-year-old Devin Morningstar was convicted of first-degree murder and arson while 19-year-old Tyler Noel pleaded guilty to second-degree murder and arson.